A Glen Rock teen arrested at his high school in June on heroin distribution charges is again in Bergen County Jail, facing new charges for selling drugs and resisting arrest, police confirmed Thursday.

Tristan Rodas, 18, was arrested Tuesday following an investigation involving the Glen Rock Police Department and the Bergen County Prosecutor’s Office, police said.

He is currently being held on $50,000 bail, according to the Bergen County Sheriff’s Department website; he is charged with selling heroin or cocaine, a third-degree crime, and resisting arrest.

On June 11, Rodas was arrested at Glen Rock High School and charged with two counts of heroin distribution, possession of drug paraphernalia, and one count of using a minor in committing a crime; investigators also discovered a large amount of cash at his home. Rodas spent five days in Bergen County Jail, before being released on bail. He has yet to be arraigned in that case, police said.

The Prosecutor’s Office has yet to formally announce Rodas’ most recent arrest. Bergen County Prosecutor John L. Molinelli could not be reached for comment Thursday.

Glen Rock has seen a large volume of drug-related arrests in recent months, a trend that has alarmed many residents. Between January and late July of this year, police have seized more than $26,000 worth of heroin off the town’s streets and made more than 70 arrests, according to a police presentation at the borough council in July.

In part, police say, this is due to aggressive policing, but Glen Rock is also vulnerable because of its location — streets and highways lead from Paterson, through Glen Rock, into northern Bergen and Passaic Counties and upstate New York. Most of the arrests made on Glen Rock streets are not borough residents, Glen Rock police said.

“We have made over 200 drug arrests this year,” said Glen Rock Detective Sgt. Eric Reamy. “We could make a heroin arrest every day, if we had the manpower and the time.”

Reamy declined to comment on Rodas’ arrest, because the prosecutor’s office is handling the case.

At least three Glen Rock residents have died following heroin overdoses so far in 2013: a 21-year-old volunteer firefighter died in February at his parents’ home, a 23-year-old woman died in July in Pennsylvania, and a 22-year-old woman died recently in Ho-Ho-Kus, according to authorities.